What it is and what it does
The Siemens SENTRON 3VA1132-4EF36-0HA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, with a TM240 thermal-magnetic overcurrent release and an integrated shunt trip (STL) for remote tripping. Rated 32 A continuous at 40 °C, derating to 30 A at 70 °C. Breaking capacity hits 121 kA at 240 V, 75.6 kA at 415 V, and still delivers 11.9 kA at 690 V — high enough for most secondary distribution panels without cascading upstream.
Integration and mounting
The 76.2 mm (3 in) width and 70 mm (2.76 in) depth fit standard SENTRON panel cutouts and busbar spacing — no rewiring if you're swapping into an existing 3VA-series footprint. Rated insulation voltage is 800 V; maximum power dissipation is 10.6 W.
